body {
    background-color: #1a1a1a;
    color: white;
    font-family: 'Arial', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}

h1 {
    color: #aaa;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.odometer {
    font-size: 6rem;
    font-weight: bold;
}

.date {
    margin-top: 20px;
    color: #555;
}

.history-link {
    margin-top: 40px;
    color: #4CAF50;
    text-decoration: none;
    border: 1px solid #4CAF50;
    padding: 10px 20px;
    border-radius: 5px;
    transition: 0.3s;
}

.history-link:hover {
    background: #4CAF50;
    color: #fff;
}